/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package org.apache.tez.dag.app.dag.event;

import java.util.concurrent.Callable;

import org.apache.tez.common.TezAbstractEvent;

import com.google.common.util.concurrent.FutureCallback;

public abstract class CallableEvent extends TezAbstractEvent<CallableEventType> implements
    Callable<Void> {
  private final FutureCallback<Void> callback;

  public CallableEvent(FutureCallback<Void> callback) {
    super(CallableEventType.CALLABLE);
    this.callback = callback;
  }

  public FutureCallback<Void> getCallback() {
    return callback;
  }

  @Override
  public abstract Void call() throws Exception;
}
